Prostomium rounded. Caruncle to chaetiger 3. Notochaetae present on chaetiger 1. Modified spines on chaetiger 5 simple hooks. Hooded hooks present from chaetiger 7; 3-5 per ramus, posteriorly lose hoods and smaller fang, becoming unidentate (2-3). Short spines with nototchaetae in posterior. Pygidium small with 4 lobes.
20 mm for 100 segments
Southwest to southeast coast
Very abundant on shells of wild molluscs, and sometimes on cultured abalone.
Produces planktotrophic larvae, through most of the year.